Take-up mechanism for knitting-machines.



L. N. D. WILLIAMS. TAKE-UP MECHANISM FOR KNITTING mamas. APPLICATION FILED DEO.18, 1911. RENEWED AUG. 15, 1914. 1 133,078, J Igtentedlv Mar. 23, 1915.

a SHEETS-$11231 1.

I E T M ws N. 0. WILLIAMS L. N. 1). WILLIAMS,- TAKELUP mn'cmmsm 0a m'rrme ma mas. v APPLICATION FILED DEC. 18, 1911. RENEWED AUG. 15, 1914. 1 1 33 078. Y Patented Mar. 23, 1915.

3 SHEETS-SHEET 2.

Vm/ Ifl WITNESSES I INVENTOR u LOUIS N. D. WILLIAMS v ifzzwTToRN EY L. N. 1). WI LLIAMS. TAKE-UP MEGHANISM POR KNITTING MACHINES. APPLIGATION FILED DEO.18, 1911. 1,1 33,078.

RENEWED AUGQ15, 1914.

. Patented Mar. 23, 1915.

I INVEN'FbR LOUIS N. D. WILLIAMS WITNESSES BY J4 HI? ATTRNEY ton rs n. n. wrnnrnras, or oeonra, rnnn'srnv Y ram-"or rancrsnr non meanest specification Bot Letters Eatent.

I TING MCEINES.

Patented Mar. 23, 119155..

Anthea-stitch filed December 18, 1311, tier'ial 250. 333,584 Renewed August 15, 191i. Serial N6. 856,937.

To all whom it may concern Be it known that ll, LOUIS N. D. Win LmMs, a citizen of the United States, residing in Ogontn, Montgomery county, Penn- 5 sylvania, have invented certain Improvements in Take-Up Mechanism for Knitting- I Machines, of which the following is a specification.

The object of my invention is to so oonstruct the web take-up mechanism for almitting machine having a rotating needle cyl-' inder that it will be as reliable and edective in o oration as the web take-up mechanism amp 0 ed in. connection with a knitting ma- 15 chine avin a non-rotating needle cylinder.

This object attain in the manner hereinafter set forth, reference being had to the accompanying drawings, in which- Figure 1 is a View, partly invertical sec- 20 tion and partly in elevation, of sufiicient of a knitting machine to illustrate the applica tion thereto of web take-up mechanism constructed in accordance with my invention;

Fig. 2 is a view, partly in plan and partly 25, in horizontal section, on the line w a, Fig.

1; Fig. 3 is a transverse section on the line 5-2), Fig; 1; Figs. 4, 5, and 6 are views,

similar to Fig. 1, of parts of the take-up mechanism, illustrating certain modificaso tions of my inventiongFig. 7 is a transverse section on the line cc, Fig. 4; Fig. 8 is a transverse section on the line d-d,' Fi 5, and Fig. 9 is a planview of parts of Fig. 6, on. the line e-e, but one smaller scale.

36 Referring in. the first instanceto Figs. 1, 2 and 3 of the drawings, 1 represents the supporting framework of the machine mounted upon legs 2 and carrying a table 3 in which is mounted, so as to be free to roco tate, aneedle cylinder 4, the latter, in the present instance, being'carried by a ring 5 with bevel teeth 6 engaged by a bevel wheel 7 on the driving shaft 3 of the machine. At the bottom of the frame 1 is an annular platto form 9 in which is mounted, so as to be free to rotate, a ring 10, the latter being caused to rotate with the needle cylinder by reason of standards 11 which connect the rings 5 and 10. H

5o Depending fromthe ringare here 12 which carryat. the bottom a cross head 13, this cross head, and the ring 10, providing bearings for a air of rods 14 whichare free to slide vertica ly in .said bearings and carry it at their upper ends hearings for a pair of? take-up rolls 15, which may he similar to be geared together an to those commonly employed in stationary needle-cylinder knittin machines and may toa worm 16 so as e positively rotated as is common in 80 such stationary-needle-cylinder machines.

lhe worm 16 is carried by a vertical shaft 17 which passes through an opening in the ring 10 and is adapted at its upper end to a bearing in a bracket 18 projecting from one 65 of the take-up roll bearings and at its lower end to a bearing 19 on a cross head 20, which connects the lower ends of 'thebars 14 and has acentral hub 21 to which is secured, in any suitable manner the upper end of a 7 vertical shaft 22 which extends below the cross head and has mountedupon it, so as to be freely rotatable independently of it, the chain wheel 23-, which is connected by an endless chain 24 to a chain-wheel 25 at the 75 lower end (if the vertical shaft 1'2.

A belt and pulleys may, of course, be substituted for the chain and chain wheels if desired, or any other available form of gearing may be employed for connecting the so shafts 17 and 22. Pivotally mounted upon the underside of the chain Wheel 23 are a pair of pawls 26 which engage with ratchet teeth 27 formed on the upper end of the tubular hub 28 of a bevel wheel 29, said 5 tubular hub being mounted so as to be free to turn in a bearing 30 at the inner end of an arm 31, the latter being rigidly mounted upon one of the legs 2 of the machine and projecting inwardly therefrom. The bevel no wheel 29 is in mesh with a bevel wheel 32 ception of a belt 41 from a pulley 42 on the driving shaft 3 of the machine, as shown in 100 Fig. 1. The shaft 39 is carried by and is free to'rotate in a bearing 43 on a lever 44:,

which is pivotallymounted upon a depending portion 45 of the arm 31 and terminates at its inner or free end in a ring or yoke 10'5 46 provided with inwardly projecting pins 47 which engage a grooved collar 48 secured to the lower end of the shaft 2 2, as shown in Fig. 1.

w The knitted weh passes downwardly fromthe needle cylinder t and between the takeup rolls 35.5 and may then be permitted to acfalling movements being, through tne ine-' dium of the shaft 22, grooved collar 4% and pins 47, transmitted to the freeend of the pivoted lever 4:4: and by said lover to the pulley 40 carried thereby. As the knitted 7 web is delivered from the needles of the cylinder 4: the take-up roll frame descends with said web and the pulley i0 is' lowered until it tightens the belt ll sufliciently to cause it to transmit power from the driving pulley l2 to the pulley 4:0. This power is transmitted through the medium of the shaft 39, pulley 38, belt 37, pulley 36, shaft 33 and bevel wheel 32 to the bevel wheel 29, and consequently to the ratchet teeth 27 on the upper end of the hub 28 of said bevel wheel. 'lhese ratchet teeth, by engagement with the pawls 26, impart rotativ'e movement to the chain wheel 23 and thence through the chain,

30 belt 24: to the chain wheel'25, shaft 17 and worm 16, thereby imparting rotative movement to the take-up rolls 15, which climb upon the knitted web and consequently raise the take-up roll frame and lever it, this to movement continuing until the belt l1 has been slackened to such an extent that it fails to transmit driving powerfromthe pulleyi2 to the pulley d0, whereupon the further rotative movement of the take-up rolls is ar- 40 rested until the further production of web has again permitted the take-up roll frame and lever id to descend suiliciently to again tighten the belt 421. -lDuring those periods when the belt a1 is slack and no rotative 35 movement is being imparted tothe bevel wheel 29 the chain wheel 23 rotates with the take-up roll frame and its shaft 22 and consequently imparts no rotative movement to the worm 16, the pawls 26, during this time,

P0 slipping over the ratchet teeth 2l-on the hub of the bevel wheel 29, but the latter, when driven from the pulley 42 through the medium of the intervening, devices described,

' rdtates much faster than the take-up roll frame, and this excess movement is, through the medium of the ratchet teeth 27 and pawls 26, imparted. to the chain wheel 26 and thence to the worm shaft 17 and worm 16, with the effect of turning the take-up rolls and causing them to rise upon the mitmd web,

in the modified form of take-up mechanism shown in Figs. d and *i' l" have substituted other power transmitting devices for the ratchet and pawl mechwisrn shown in bearing 56 which surrounds the shaft 22,

anors Fig. 1. n this modcation the shaft 62 carried by the lever M is provided, in addi= tion to the belt pulley 40, with a vbevel wheel -which meshes with a bevel wheel 51 hav-. ing a hub adaptedto turn on a stud 52 on the lever 4:4: and carrying at its upper end a chain wheel 53 which, by means of a chain 5%, drives the lower member of a'duplex chain wheel 56 mounted upon a tubular and is carried by a foot 57 fixedly moted upon the door or other suitable supporhthe upper member of the duplex chain wheel 65 receiving the chain 24: which drivesothe chain wheel 25 at the lower end of the worm so shaft 17. The lever it may be pivotally mounted upon a bracket on one of the lees of the machine or upon any other available support v In the modified construction shown 8 Figs. 5 and 8 the shaft 39 has a bevel wheel 66 which meshes with a bevel wheel 61 on an I upright shaft 62 mounted in a bearing carried by a lever 63 which is pivotally mount-I ed, upon a bearing on the" lever ll, co-aXinlwith the shaft 39, as shown inlEigL '6 he lower arm of said lever 63 bearing upon a cam surface 64: on an arm 65 which may be rigidly secured to a is of the machine'or to the floor, or to hot As shownpit iis 66 secured to'the door and carries at its'npper end the pin upon which the lever d tis piv-i one. At its upper end the shaft 62 carries a belt pulley 66, which, by means of a belt- 67, drives a pulley 68 mounted upon a col 166 lar 69 on the shaft 22, so as to be free to turn on said shaft, the hub of said pulley 68 having formedcn or secured thereto spur wheel 76 which meshes with a similar spur wheel 71 at the lower end of the worm shaft 17. In a construction of this type thebelt all may be replaced by a chain belt 4-1 and the belt pulleys t0 and 42 by chain wheel or pulleys, as'shown for instance at d0 in Fig. 5, in which case the latter may rotate continuously, the rising and falling movement of the lever 44: not atfecting' the continuous driving connection between the chain belt and wheel or ulley. a The operation of the take-up pulleys in this case is dependent upon the slackening and tightening of the belt 67 which connects the pul leys 66 and 68, the action of the cam 64: upon the lever 63, as the lever 44- swings downwardly, causing said lever 63 to swing the pulley 66 outwardly so as to tighmn the belt 67 suhiciently to part movement totho pulley 68 and thence to the worm shaft 17, and the rise of the lever serving to relieve the lever 63 from the pressure of the cam to an extent suttcient to permit the inward swinging movement of the pulley 66 and the slackening of the belt 6'? to the nontransmission point. lln order to properly resist the lateral strain upon the shaft 22, ran

not

the latter is, at a point below the pulley 68, adapted to a bearing 65 on an arm 65 pro ecting from the same base as the arm 65, or otherwise mounted.

It will be noted that in all of the constructions thus far described the conditions as to primary power transmission are'the same as in those knitting machines in which the needle cylinder is stationary, that is to say, the power is transmitted by means of a belt from a pulley on the main driving shaft of the machine to a pulley on a shaft carried by a leverwhich is ivotally mounted upon some fixed part oi the framework of the machine, neither of these members of the power transmitting mechanism rotating about the axis of the needle cylinder, and another respect in which the take-up mechanism resembles that of a stationary cylinder machine is that the pulley which receives thedriving belt 41 is located relatively close to the fulcrum of the lever which carries said pulley while the weight of the take-up roll frame is exerted upon said lever at a point much farther from the fulcrum of the same, so that even if the weight of the take-up roll frame is partially counter-balanced, as it sometimes is in knitting webs of light and delicate texture, it will still depress the belt pulley with sufficient force to insure good driving connection between the same and thejepending driving belt and will thus insure the operation of the take-up rolls at the proper times. Some of the features of my invention may, however, be embodied in take-up mechanism in which the swinging lever is not mounted upon the fixed framework of the machine but upon a support which rotates with the needle cylinder, and in F i s. 6 and 9 I have shown one instance of a mo ification of this character. In this case a horizontally disposed pulley 40 is mounted so as to rotate in the ring 9, the driving belt "41 being bent at right angles over idlers 73 so as to engage the grooved rim or periphery of the horizontal pulley 40 The lever 44 is pivotally mounted upon a pin 74 carried by an arm 75 projecting from one of the standards 11 which connect the needle cylinder drive ring and the ring 10, the latter being free to turn in the ring 9 as before. The take-up rol-ls 15 ,and the wormshaft 17 are adapted to bearings formed directly upon the lever 43, the latter also carrying the gears whereby power is transmittedfrom the worm 16 to the takeup rolls. The worm shaft 17 carries at its lower end a friction wheel or pulley 77, and, as the lever 44 descends, the rim or periphcry of this friction wheel or pulley is pressed into driving contact with the inner face of the rotatin pulley 40 and is consequently rotated t ereby so as to impart rotative movement to the take-up rolls 15,

the rise of the latter on the knitted web lifting thelever 44 suiiiciently to withdraw the rim of the wheel or pulley 77 from contact with the inner face of the pulley 40 and thus sto the rotation of said friction wheel or pul ey 77 and of the take-up rolls.

In all of the constructions illustrated the axes of both the driving pulle 42 and of the wheel or pulley driven there y are fixed, in the sense that their axes do notrotate about the axis of the needle cylinder, and

the belt which connects these pulleys is also freed from the necessity of traveling about the axis of the needle cylinder, consequently preserving the conditions under which these elements of the take-up mechanism of a-stationary cylinder machine operate, and therefore insuring reliability and efiectiveness of knitted Web, and take-up roll operating' mechanism comprising a driving pulley which has no movement of rotation about the axis of the needle cylinder, a driven pulley, a'belt connecting said driving and driven pulleys, and means whereby on the fall of the take-up rolls movement is transmitted thereto from'the driven pulley and on the rise of said rolls such transmission is arrested.

2. The combination, in take-up mechanism for a knitting machine having a rotating needle cylinder, of take-up rolls rotating With the needle cylinder and, also susceptible of rising and falling movement in the plane of the-knitted web,"and take-up roll operating mechanism comprising driving and driven pulleys neither of which has movement of rotation about the axis of the needle cylinder, a belt connecting saidpulleys, and means whereby on the fall of the take-up rolls movement is transmitted thereto from the driven pulley and on the rise of said rolls such transmission is arrested.

3; The combination, in take-up mechanism for a knitting machine having a rotating needle cylinder, of take-up rolls rotating with the needlecylinder and also. susceptible of rising and falling movement in the plane of the knitted web, and take-up roll operating mechanism comprising a driving pulley which has no movement of rotation about the axis of the needle cylinder, a driven pulley which partakes of the rising and falling movements of the take-up rolls, a belt connecting said driving and driven pulleys, and means whereby on the descent of the driven pulley movement is transmitted therefrom to the take-up rolls and on the rise of said driven pulley such transmission is arrested. 4:. The combination, in take-up mechanism for a""=knitting machine having a rotating needle cylinder, of take-up rolls rotating with the needle cylinder and also susceptible of rising and falling movement in the plane of the knitted web, and take-up roll operating mechanism comprising a driving pulley which has no movement of rotation about '15 the axis of the needle cylinder, a driven pulley which also has no movement of rotation about the axis of the needle cylinder but partakes of the rising and falling movements of the take-up rolls, and means whereby on the descent of said driven pulley motion is transmitted therefrom to the take-up rolls and on the rise of such drive-1r pulley said transmission is arrested.

5. The combinatiomin take-up mechanism for a knitting machine having a rotating needle cylinder, of take-up rolls rotating with said needle cylinder, and take-up roll operating mechanism having. as elements, belt connected pulleys, the driving pulley 3a rotating about an axis which is fixed in the sense that it has no movement of rotation about the axis of the needle cylinder, and the driven pulley being carried by a lever which is mounted upon anon-rotating portion of the machine and is free to descend as the take-up rolls descend with the 'web or to rise as said take-up rolls climb the web;

6. The combination, in take-up mechanism for a knitting machine having a rotating 40 needle cylinder, of take-up rolls rotating with said needle cylinder, take-up roll-oper ating mechanism having. as elemcnts, belt connected pulleys, the driving pulley rotatanemone ing about an axis which is fixed in the sense that it has no movement of rotation about the axis of the needle cylinder, and the driven pulley being carried by alever which is mounted upon a non-rotating portion of the machine and is free to descend as the take-up rolls descend with the web or to rise as said take-up rolls'climb the web, and means whereby said movements of the lever cause rotation or arrest of rotative movement of the take-u rolls.

'2'. The combination, in takeup mechanism for a knitting machine having a rotating needle cylinder, of a take-up roll frame rotating with the needle cylinder but free to rise and fall in respect thereto, a lever in I longitudinal but non-rotative engagement with said take-up roll frame, and take-up roll driving mechanism havin as elements a pair of pulleys, the driven pu ley being carried by said lever and the driving pulley being mounted upon an axis which is fixed in the sense that it has no rotative movement about the axis of the needle cylinder.

8. The combination, in take-up mechanism for aQknitting machine having'a rotating needle cylinder, of a take-up roll frame rotating with the needle cylinder but free to rise and tall in respect thereto, said frame having a depending shaftavith grooved collar thereon, a lever having pins engaging said grooved collar whereby it is in longitudinal but non-rotative engagement with the shaft, and take-up roll operating mechanism carried in part by said lever.

lin testimony whereof, I have signed my 7 name to this specification in the presenceot two subscribing witnesses.

LOUIS N. D. WILLIAMS.

tVitnesses:

KATE A. BEAIDLE, HAMILTON D. TURNER. 

